Fatty Acids, Free
| Sunquest Code: | FFA | ||
| Epic Code: | LAB986 | Epic Name: | Fatty Acids Free |
| Synonyms: | Nonesterified Fatty Acid; Free Fatty Acids | ||
| Methodology: | Spectrophotometric | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-4 days. | ||
| Special Instructions: | Fasting specimen is preferred. Serum must be separated from cells and frozen immediately after clot formation, otherwise lipase continues to break down triglycerides, giving rise to elevated levels of nonesterified (free) fatty acids. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Red or gold (gel) (Red (no gel)) |
| Collection Instructions: | Collect on ice. |
| Causes for Rejection: | Specimens collected in EDTA, heparin, sodium fluoride/potassium oxalate, sodium citrate or ammonium oxalate. Non-frozen specimens. |
Processing and Shipping
| Specimen Processing: | Allow serum specimen to clot completely on ice. Separate from cells immediately after and aliquot 1 mL, 0.2 mL minimum and freeze immediately. |
| Shipping Instructions: | Ship on dry ice. |
| Stability: | Stability after separation from cells: 4 hours refrigerated; 1 month frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
| Referral Lab number: | 80120 |
Interpretive
| Reference Range: |
Effective Nov 17, 2014:
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